Seagate ST3450857SS, 100516226, ST3300457SS, ST3300657SS Installation, Drive Orientation, Cooling

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10.0INSTALLATION

Cheetah 15K.7 disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive.

SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accommodate the drive. In such systems, the host system typically provides a carrier or tray into which you need to mount the drive. Mount the drive to the carrier or tray provided by the host system using four 6-32 UNC screws. Do not over-tighten or force the screws. You can mount the drive in any orientation.

Note. SAS drives are designed to be attached to the host system without I/O or power cables. If you intend the use the drive in a non-backplane host system, connecting the drive using high-quality cables is acceptable as long as the I/O cable length does not exceed 4 meters (13.1 feet).

Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host system. This connects the drive directly to your system’s SAS connector. The SAS connector is normally located on a SAS backpanel. See Section 11.4.1 for additional information about these connectors.

Power is supplied through the SAS connector.

The drive is shipped from the factory low-level formatted in 512-byte logical blocks. You need to reformat the drive only if you want to select a different logical block size.

10.1DRIVE ORIENTATION

The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the drive in horizontal (disks level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.

10.2COOLING

Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6.4.1, "Temperature."

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disk assembly (HDA). You should confirm that adequate heat removal is provided using the temperature measurement guidelines described in Section 6.4.1.

Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1 in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment.

If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 11. The air-flow patterns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guidelines of Section 6.4.1 are met.

CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F

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Contents SED Fips 140-2 models Standard models Self-Encrypting Drive modelsPage Contents Installation Defect and Error ManagementAbout Fips About SELF-ENCRYPTING Drives Interface RequirementsCheetah 15K.7 SAS Product MANUAL, REV. F III Seagate Technology Support Services SED ScopeFips 140-2 L Evel Compliance STANDARDS, Compliance and Reference DocumentsStandards Korean KCC Australian C-TickTaiwanese Bsmi European Union Restriction of Hazardous Substances RohsGeneral Description Performance Standard FeaturesMedia Description Reliability FACTORY-INSTALLED OptionsFormatted Capacities ST3600057SS ST3450857SS ST3300657FCInternal Drive Characteristics Performance CharacteristicsAccess time Format command execution time minutesPREFETCH/MULTI-SEGMENTED Cache Control General performance characteristicsSTART/STOP Time Cache Operation Prefetch operation Caching write dataReliability and Service Reliability SpecificationsError Rates Hot plugging the drive Preventive maintenance4 S.M.A.R.T Controlling S.M.A.R.TMilliseconds Performance impactReporting control Determining rateParameter Code Description Temperature Log Page 0DhDrive Self Test DST DST failure definitionImplementation State of the drive prior to testingInvoking DST Short and extended testsLog page entries Product warrantyAbort ShippingAC Power Requirements PHYSICAL/ELECTRICAL SpecificationsDC Power Requirements 600 GB DC power requirements450 GB DC power requirements 300 GB DC power requirements Current profiles Power sequencingConducted noise immunity Typical 450GB current profiles Power Dissipation Environmental Limits Temperature a. Operating300GB model Effective altitude sea level a. Operating Relative humidityShock Shock and vibrationRecommended mounting VibrationAcoustics Air cleanlinessCorrosive environment RoHS compliance statementUnits of Measure mm inches Mechanical SpecificationsSeagate Enterprise SED PurposeValidation Program About SELF-ENCRYPTING Drives Controlled AccessData Encryption Random Number Generator RNGPower Requirements Authenticated Firmware DownloadSupported Commands Drive LockingDrive Error Recovery Procedures Defect and Error ManagementDrive Internal DEFECTS/ERRORS Read and write retry count maximum recovery times SAS System ErrorsMedia PRE-SCAN Background Media ScanDeferred AUTO-REALLOCATION Idle Read After WriteCooling InstallationDrive Orientation Grounding Drive MountingInterface Requirements SAS FeaturesTask management functions Task management responsesCommands supported by Cheetah 15K.7 SAS family drives Scsi Commands SupportedCommands supported by Cheetah 15K.7 SAS family drives Commands supported by Cheetah 15K.7 SAS family drives Cheetah 15K.7 inquiry data Mode Sense dataInquiry data Cheetah 15K.7 SAS Product MANUAL, REV. F 11.3.2.1 600GBmodel Mode Sense data 11.3.2.2 450GB model Mode Sense data 11.3.2.3 300GB model Mode Sense data Supported Feature or condition Miscellaneous Operating Features and ConditionsMiscellaneous features SAS physical interfaceDatum B This Area Connector requirements Physical characteristicsElectrical description Pin descriptionsSignal Characteristics PowerSAS transmitters and receivers Ready LED OutSAS-2 Specification Compliance Differential signalsBPS Additional InformationIndex Page SAS See also cooling Americas Seagate Technology LLC
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